Problem DAG Database copy Ex2019 database edb not found

Welcome,

i have problem With DAG database copy 

I have 2 exchanges EX1 and EX2 in DAG

when add database copy on EX2 form Ex1 i have problem 

Suspend Copy replication Error in :

The Microsoft Exchange Replication service encountered an error while inspecting the logs and database for Mailbox Database 0803646788\EX2 on startup. Error: File check failed : Database file 'C:\Program Files\Microsoft\Exchange Server\V15\Mailbox\Mailbox Database 0803646788\Mailbox Database 0803646788.edb' was not found.

When I create new database and add Database copy its no problem.

I check test-replicationhealt

Server Check Result Error
------ ----- ------ -----
EX1 ClusterService Passed
EX1 ReplayService Passed
EX1 ActiveManager Passed
EX1 TasksRpcListener Passed
EX1 TcpListener Passed
EX1 ServerLocatorService Passed
EX1 DagMembersUp Passed
EX1 MonitoringService Passed
EX1 ClusterNetwork Passed
EX1 QuorumGroup Passed
EX1 FileShareQuorum Passed
EX1  DatabaseRedundancy *FAILED* Failures:

There were database availability check failures for database 'Mailbox Database 0803646788' that may be lowering its availability. Availability Count: 1. Expected Availability Count: 2. Detailed error(s):

EX2:
Database copy 'Mailbox Database 0803646788' is in a Failed state on server 'EX2'. Reason: The Microsof
t Exchange Replication service encountered an error while inspecting the logs and database for Mailbox Database 0803
646788\EX2 on startup. Error: File check failed : Database file 'C:\Program Files\Microsoft\Exchange Server\V1
5\Mailbox\Mailbox Database 0803646788\Mailbox Database 0803646788.edb' was not found.
. If you need to activate this database copy, you can use the Move-ActiveMailboxDatabase cmdlet with the -SkipHealth
Checks parameter to forcibly activate the database copy.

Thank's for sugestions and answers.

Dawid